Purge linker block allocators before leaving linker
This is the second attempt to purge linker block allocators. Unlike the
previously reverted change which purge allocators whenever all objects
are freed, we only purge right before control leaves the linker. This
limits the performance impact to one munmap() call per dlopen(), in
most cases.
Bug: 112073665
Test: Boot and check memory usage with 'showmap'.
Test: Run camear cold start performance test.
Change-Id: I02c7c44935f768e065fbe7ff0389a84bd44713f0
diff --git a/linker/linker.h b/linker/linker.h
index 91d3ddf..964c266 100644
--- a/linker/linker.h
+++ b/linker/linker.h
@@ -186,3 +186,5 @@
void increment_dso_handle_reference_counter(void* dso_handle);
void decrement_dso_handle_reference_counter(void* dso_handle);
+
+void purge_unused_memory();